package cn.sharelink.pushtest;

import android.util.Log;

public class LogUtils {
    static String className;//类名
    static String methodName;//方法名
    static int lineNumber;//行数

    private LogUtils(){
        /* Protect from instantiations */
    }

    public static boolean isDebuggable() {
        return BuildConfig.DEBUG;
    }

    private static String createLog( String log ) {
        StringBuffer buffer = new StringBuffer();
        buffer.append(methodName);
        buffer.append("(").append(className).append(":").append(lineNumber).append(")");
        buffer.append(log);
        return buffer.toString();
    }

    private static void getMethodNames(StackTraceElement[] sElements){
        className = sElements[1].getFileName();
        methodName = sElements[1].getMethodName();
        lineNumber = sElements[1].getLineNumber();
    }


    public static void e(String message){
        if (!isDebuggable())
            return;

        // Throwable instance must be created before any methods
        getMethodNames(new Throwable().getStackTrace());
        Log.e(className, createLog(message));
    }


    public static void i(String message){
        if (!isDebuggable())
            return;

        getMethodNames(new Throwable().getStackTrace());
        Log.i(className, createLog(message));
    }


	//打印长日志，超出LogCat中的Msg输出的上限
    public static void longMsg(String msg) {
        int LOG_MAXLENGTH = 2000;
        if (!isDebuggable())
            return;
        getMethodNames(new Throwable().getStackTrace());
        int strLength = msg.length();
        int start = 0;
        int end = LOG_MAXLENGTH;
        for (int i = 0; i < 100; i++) {
            if (strLength > end) {
                Log.i(className, createLog(msg.substring(start, end)));
                start = end;
                end = end + LOG_MAXLENGTH;
            } else {
                Log.i(className, createLog(msg.substring(start, strLength)));
                break;
            }
        }
    }

    public static void d(String message){
        if (!isDebuggable())
            return;

        getMethodNames(new Throwable().getStackTrace());
        Log.d(className, createLog(message));
    }

    public static void v(String message){
        if (!isDebuggable())
            return;

        getMethodNames(new Throwable().getStackTrace());
        Log.v(className, createLog(message));
    }

    public static void w(String message){
        if (!isDebuggable())
            return;

        getMethodNames(new Throwable().getStackTrace());
        Log.w(className, createLog(message));
    }

    public static void wtf(String message){
        if (!isDebuggable())
            return;

        getMethodNames(new Throwable().getStackTrace());
        Log.wtf(className, createLog(message));
    }
}
